Well, we also have no idea who are the good customer and who are the bad ones...
Life is a box of chocolate, you'll never know what you gonna get if you don't give it a try. :)
As a sales of Chinese maunfacturer, I feel awful to see these words....Tons of pcbs produced in China, some of them in a really low price, yes, they are Rubbish, while many qualified manufacturer produce excellent boards,too...